Napoleon
fish or commonly called by the name of Napoleon Wrasse, is a species of the
family Labridae. This fish is most often referred to by the trade name Humphead,
Maori Wrasse ataui so May due to the characteristics of the head protruding
from the eye to the back. However, these characteristics are shared by a family
member Scaridae species, namely parrotfish (Bolbometopon muricatum).

Napoleon
one reef fish are relatively long life time. These fish are able to live to the
age of 30 years with body size capable of reaching over 229 cm with a weight of
190 kg individual. These fish include sequential hermaphrodite fish species. He
has a particular sex early in life then the gender change with increasing age. This
leads to the dominance of the population are male napoleon on small to medium
size then turn into the female population when will mature gonads. This is a
unique phenomenon in nature, is a strategy to support the existence living
things in nature.

Napoleon
fish meat is white and very tasty famous, it makes this fish is very expensive appreciated.
The fish price reached USD 100 kg. Costly trade this fish is one of the causes
of the fish population is much reduced in nature.

Napoleon
fish known takes the crown of thorns or a crown- of- thorn, Acanthaster planci
where these animals have a very big appetite for coral polyps. Acanthaster
planci is an organism of the phylum Echinodermata, Asterozoa subphylum, class Asteroidea,
orders and families Acanthasteridae Valvatida. The existence of thorny crown
very easily estimated from the spot on coral bleaching. Another specialty of
this thorny crown star is capable of vegetative division. If we cut the body
from the crown of thorn, the pieces of the body into a new individual capable
and able to lead the attack doubled. One individual can prey on thorny crown of
coral reef area of ​​6 m2 within a year.

Napoleon
fish are believed researchers often consume eggs crown of thorns. So the fish is
expressed as a key stone species. If the number is reduced, there will be a
population explosion of the crown of thorns. This
will result in the destruction of coral reefs in very broad.